GOOD NEWSSameer has stated our battery life problems are unlikely to be caused by the battery.
Kobo is looking into it.

Aha this is more promising (the hitherto unconfirmed firmware bug I was looking for?). I just wished they could have been more forthcoming about this beforehand and can but hope they will engage with us more in the future. Being open about problems fosters trust and builds a better relationship based on co-operation. Gosh that sounds rather Star-Trekky doesn't it?